body {
    margin: 0;
    padding: 0;
    background-color: #f5f5f5;
}

nav {
    border-bottom-width: 2px;
    border-bottom-color: #ccc;
    border-bottom-style: solid;
    padding:10px;
    margin-bottom: 15px;
    background-color: #fff;
}

#padding-test {
    border-width: 1px;
    border-color: blue;
    border-style: solid;

    padding: 5px;
}